Aviation

Aviation

Dealing with vehicles or machines used in flight or propulsion through the air.

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Aviation > Aeronautics

air

Aviation; Aeronautics

A physical mixture of gases that make up the atmosphere of the earth. Pure dry air contains approximately 78% nitrogen and 21% oxygen by volume, with the remainder made up of ...

analog

Aviation; Aeronautics

A physical variable that keeps a fixed relationship with another variable as it changes. For example, the position of the hands of a clock keeps a fixed relationship with time. It ...

hypoxia

Aviation; Aeronautics

A physiological condition in which a person is deprived of the needed oxygen. The effects of hypoxia normally disappear as soon as the person is able to breathe air that contains ...

sector gear

Aviation; Aeronautics

A piece of a gear wheel that contains the hub and a portion of the rim with the teeth. A sector gear, which is used where only a small amount of angular movement is needed, ...

ground power unit (GPU)

Aviation; Aeronautics

A piece of aircraft ground support equipment that includes a motor-generator and an air compressor. The GPU can be connected to an aircraft on the ground to supply electrical ...

drop cloth

Aviation; Aeronautics

A piece of canvas or plastic used to cover the floor or objects on the floor when walls and ceilings are being painted. The drop cloth prevents paint from dripping on areas where ...

capacitance box

Aviation; Aeronautics

A piece of electrical test equipment made up of a number of capacitors and selector switches. Any amount of capacitance needed in a circuit can be selected on the switches and the ...